Kangaroo Defense Keres Defense Puzzle (Rated 975): Win Material — Opening Fork

This puzzle is a classic opening tactic where active piece placement creates a decisive material gain. Black’s queen check is not just a forcing move; it also targets loose coordination and exploits the pinned knight on c6. The position shows how a single tactical shot can turn a small edge into a winning advantage by attacking the king and a key defender at the same time. In classical chess, these forcing ideas often decide the game before development is complete.